Proper steps to ensure live sports 4K stream

Can you please confirm the process to ensure viewing of live 4K sports coverage? It seems on the channel itself the lower resolution stream is provided and you must instead go through the on-demand menu (say "4K" into the mic) to stream the live 4K content of Premier League games. Will this process be the same in the future or will there be a live feed 4K channel to tune into for sports on Fox/FS1 and NBCSN?

I also saw news of Thursday night NFL football games and MLB ALCS being broadcast in 4K. Will these be available on Xfinity through this same process or a live FOX 4K channel?